First I am so sorry you are in that situation. That's an awful place to be. I would suggest posting on Facebook or other social media, first. Give your friends and family a chance to help, and maybe ask them to boost the signal to others. This way has no listing fees. The other place to sell is Ebay. That's kind of the home of collectibles online, but they do have a listing fee. In all cases make sure you factor in shipping costs into the price.